A Study to Test How Well Different Doses of BI 1569912 Are Tolerated and How Well They Work in People With Depression Who Take Anti-depressive Medication

Randomized, Double-blind (Patient, Investigator), Placebo-controlled, Parallel Group, Single Dosing Study on Safety, Tolerability, Pharmacokinetic and Preliminary Efficacy of BI 1569912 as Adjunctive Therapy in Patients With Major Depressive Disorder